Introduction - HP 8340B Manual

RF Section
Assembly-Level Service
CONTENTS
INTRODUCTION
..............................................................
H-1
Assemblies
..................................................................
H-1
THEORY
OF OPERATION
.....................................................
H-2
Low Band
..................................................................
H-2
High Band
..................................................................
H-2
Leveling
....................................................................
H-2
Pulse Modulation
.............................................................
H-3
Step Recovery Diode (SRD)
....................................................
H-3
SYTM
Driver Compensation
....................................................
H-3
A8 3.7 GHz Oscillator
.........................................................
H-3
A9 Low Band Pulse Modulator
..................................................
H-4
A10 Directional Coupler
.......................................................
H-4
AH High Band Detector
.......................................................
H-4
A12 Low Band Splitter/Detector
.................................................
H-4
A13 SYTM (switched YIG-tuned multiplier)
.........................................
H-4
A14 High Band
Power
Amplifier
.................................................
H-5
A15 Low Band
Low Pass
Filter
..................................................
H-5
A16 High Band
Modulator/Splitter
.............................................
H-5
A17
Low Band Mixer
..........................................................
H-5
A18
Low Band Power Ampifier
..................................................
H-6
A63 RF Attenuator/J5 RF Output Connector
.......................................
H-6
J5/J20 RF
Output Connector
...................................................
H-6
AT1
Peripheral Mode Isolator
...................................................
H-6
AT3 Isolator
.................................................................
H-6
ALC Loop
..................................................................
H-7
SYTM
Related Assemblies
.....................................................
H-8
A28 SYTM
Driver
Assembly
....................................................
H-8
Pulse Modulation Assembly
...................................................
H-11
RF Section Simplified Block Diagram
............................................
H-13
OVERALL ASSEMBLY-LEVEL TROUBLESHOOTING
............................
H-15
Troubleshooting Sequence
....................................... ...........
H-15
RF Section Overall Block Diagram
..............................................
H-17
SYTM PEAKING ASSEMBLY-LEVEL TROUBLESHOOTING
.....................
H-19
The
Fault Annunciator
Comes
On
...............................................
H-19
HP 8340B/41B
Table of
Contents
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